Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8114191 | Energy efficient approach to COcapture process A system for capturing carbon dioxide is provided including a feed line transporting an exhaust gas, a first separator, a first compressor, a first membrane, a first ejector, a second separator, a second compressor, and a carbon dioxide storage tank. The first membr... | 02/14/2012 |
| 7875099 | Air filtration in computer systems An electronic device includes a housing defining a chamber, a circuit board positioned in the chamber and having at least one integrated circuit, an air inlet port and an air outlet port formed in the housing, a fluid flow generator to generate an air flow across th... | 01/25/2011 |
| 7431752 | Air purifier with Ozone reduction arrangement An air purifier includes an outer case having an air purifying cavity, an ionizer module, and an ozone reduction module. The ionizer module includes a power unit and an ionizing electrode. The ozone reduction module is electrically connected to the power unit for ge... | 10/07/2008 |
| 7381245 | System for influencing and treating the air of at least one room An arrangement for treating room air has a first air quality sensor in an external air conduit of an air conditioning device. An ionization apparatus, an ozone sensor, an air humidity sensor, an airflow sensor, and at least one air temperature adjusting device are a... | 06/03/2008 |
| 7351274 | Air filtration system control An intense field dielectric air filtration system associated with an air conditioning unit includes a microprocessor based control system which may be connected to the thermostat of the air conditioning unit to energize the air filtration system in response to a cal... | 04/01/2008 |
| 7350521 | Simplified dual mode medical oxygen concentrator Oxygen concentrator system having a portable oxygen generator unit adapted to generate a non-humidified oxygen-rich gas and a stationary base unit adapted to generate a humidified oxygen-rich gas, wherein the portable oxygen generator unit and the stationary base ar... | 04/01/2008 |
| 7332019 | Air filtration system An air filtration system includable in and for HVAC equipment includes one or more intense field dielectric filter units and a field charging unit retained in a support structure or cabinet by a removable door which includes control circuitry and contactors engageab... | 02/19/2008 |
| 7316735 | Dust collector An apparatus, which collects particulate matter contained in a gas flowing through a flow path formed in a cylindrical shape having an outer surface and an inner surface, includes: an outer shell that forms the outer surface of the flow path; a ground electrode that... | 01/08/2008 |
| 7311756 | Fanless indoor air quality treatment An indoor air quality system for a structure is provided. The indoor air quality system includes a ventilation system and a corona discharge apparatus. The ventilation system directs air through the structure. The corona discharge apparatus is positioned within the ... | 12/25/2007 |
| 7273516 | Plate heat exchanger A plate heat exchanger for exchanging heat between a first air stream and a second air stream includes a plurality of plates limiting first and second exchange chambers which are serially arranged in a transversal direction with respect to the plates. A first air st... | 09/25/2007 |
| 7273051 | Dual mode medical oxygen concentrator Oxygen generation system having a portable oxygen generator unit including a portable air separation device for the generation of an oxygen-rich gas, a primary gas pump including means to supply air to the portable air separation device, a primary motor to drive the... | 09/25/2007 |
| 7267708 | Rigid electrode ionization for packed bed scrubbers An ionizing particulate scrubber is provided for the removal of particulate from a gaseous exhaust stream, said scrubber including two sections: a charging section and a collection section. The charging or ionizing section includes one or more cylindrical tubular gr... | 09/11/2007 |
| 7208030 | Suspended particulate analyzer An apparatus analyzes components of particulate materials suspended in air. The apparatus includes a container into which the air is introduced, a discharging electrode arranged in the container to electrically charge the particulate materials contained in the air, ... | 04/24/2007 |
| 7183115 | Gas sample analysis system A gas analyzer system for analyzing samples of compressed or ambient gas such as breathing air within a scuba tank, SCBA or ambient air within an industrial plant and informing the user as to the results of the sample's gas purity without the gas sample having to be... | 02/27/2007 |
| 7147692 | Air cleaning apparatus and method for cleaning air The method involves contacting the air with an aqueous or non-aqueous liquid in a stand-alone system. The air may be brought into contact with the liquid using a number of different types of apparatus, including a packed column scrubber. The liquid may be non-evapor... | 12/12/2006 |
| 7097689 | Process and system for purifying gases A process and system for purifying an impure gas to produce a purified gas in a gas purification system and protecting the system from damage by a) passing a portion of a first gas stream into a reactor vessel, which exits as a second purified gas stream; b) combini... | 08/29/2006 |
| 7041157 | Filter system for spreading soot particles from a stream of exhaust gas An apparatus for separating and converting exhaust particulates from a stream of exhaust gas, especially a diesel engine, into gaseous substances, in which the exhaust gas is guided through a honeycomb filter (6) made from a porous ceramic material whose axia... | 05/09/2006 |
| 6974496 | Apparatus for thermal swing adsorption and thermally-enhanced pressure swing adsorption The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention,... | 12/13/2005 |
| 6935356 | Underground storage tank metering system in a service station environment A meter coupled in close proximity to an underground storage tank fuel pipe that delivers fuel from the underground storage tank to fuel dispensers in a service station environment. The meter measures the total amount of fuel drawn from the underground storage tank.... | 08/30/2005 |
| 6929018 | Underground storage tank metering system in a service station environment A meter coupled in close proximity to an underground storage tank fuel pipe that delivers fuel from the underground storage tank to fuel dispensers in a service station environment. The meter measures the total amount of fuel drawn from the underground storage tank.... | 08/16/2005 |
| 6669922 | Installation for the production of pure hydrogen from a gas containing helium The feed gas contains essentially hydrocarbons, particularly methane, and impurities including helium. The process includes the conversion of the hydrocarbons into hydrogen and CO2, and the purification by adsorption of the hydrogen contained i... | 12/30/2003 |
| 6660061 | Vapor purification with self-cleaning filter A vapor filtration device including a first electrode, a second electrode, and a filter between the first and second electrodes is disclosed. The filter is formed of dielectric material and the device is operated by applying a first electric potential bet... | 12/09/2003 |
| 6245131 | Electrostatic air cleaner An electrostatic air cleaner for installation in an air-circulating system, including a flow sensor for sensing the flow of air across the electrostatic air cleaner, and a switch, responsive to the flow sensor, for operating the electrostatic air cleaner ... | 06/12/2001 |
| 6193782 | Modular condensing wet electrostatic precipitators and method A condensing wet electrostatic precipitator is constructed of collection electrode modules which establishing collection electrodes and a cooling jacket, each collection electrode module having a configuration including at least one part-tubular section a... | 02/27/2001 |
| 6120580 | Method for testing systems designed for NOx reduction in the combustion of carbonaceous fuels A method for the in-situ predetermination of the effects of NOx reduction systems on selected components. This determination can yield quick, inexpensive and accurate results for a number of characteristics, for example: catalyst longevity; efficiency wit... | 09/19/2000 |
| 6110256 | Apparatus and method for removing particulates and corrosive gases from a gas stream Apparatus and method for removing particulates and corrosive gases from a gas stream includes the serial use of a condensing wet electrostatic precipitator section for removing smaller particulates, in the submicron range, in conjunction with a vertically... | 08/29/2000 |
| 6033457 | Oxygen generator system and method of operating the same An oxygen generating system includes an oxygen generator having an oxygen ion conducting honeycomb structure and a heat exchanger thermally coupled to the oxygen generator. The system also includes a heater thermally coupled to the oxygen generator and a ... | 03/07/2000 |
| 5922103 | Automatic gas conditioning method An air pollution control system using a novel control system is disclosed. The control system is particularly useful with a gas conditioning tower ("GCT") which uses a spray from a two-fluid nozzle to cool hot process gases prior to flowing to an electros... | 07/13/1999 |
| 5688308 | Electrostatic air cleaning system with air flow sensor The electrostatic air cleaning system is mounted in a duct of a residential or commercial heating and cooling system to remove particles from the circulating air. The electrostatic air cleaning system includes an air flow sensor which turns the air cleane... | 11/18/1997 |
| 4770674 | Gas conditioning for an electrostatic precipitator Apparatus and method for precipitation of fly ash from flue gas of a coal burner wherein liquid sulfur is burned to form SO2. The SO2 is converted to SO3 and injected into the flue gas. The sulfur burning process is modula... | 09/13/1988 |
| 4624685 | Method and apparatus for optimizing power consumption in an electrostatic precipitator A process for optimizing the power consumption of electrostatic precipitators communicating with a boiler or the like includes a load indexed signal fed forward to a field power controller to approximate the required power levels. An optical transducer is... | 11/25/1986 |
| 4416671 | Method of optimizing the collection efficiency of an electrostatic precipitator A method of optimizing the collection efficiency of a dry-process electrostatic precipitator which is preceded by an evaporative cooler, wherein liquid is sprayed into the evaporative cooler at a rate which is controllable to maintain a desired temperatur... | 11/22/1983 |
| 4187085 | Treating facility for sintering waste gas A treating facility for treating sintering waste gas comprises a first electric dust collector receiving the waste gas and a main blower connected to the first dust collector for moving the waste gas through the first dust collector. A heat exchanger is c... | 02/05/1980 |
